Details

Autor(en) / Beteiligte

• Sardari, Pouyan Talebizadeh
• Mohammed, Hayder I.
• Giddings, Donald
• walker, Gavin S.
• Gillott, Mark
• Grant, David

Titel

Numerical study of a multiple-segment metal foam-PCM latent heat storage unit: Effect of porosity, pore density and location of heat source

Ist Teil von

• Energy (Oxford), 2019-12, Vol.189, p.116108, Article 116108

Ort / Verlag

Oxford: Elsevier Ltd

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• This study numerically investigates the performance of the melting process for a PCM based heat storage system under the effect of different variables in a vertical container with a copper metal foam. Different cases were studied and compared including the effects of variable porosities and pore densities, non-equilibrium porous medium model, a multiple-segment metal foam case and different heater locations in the system on the liquid fraction and temperature as presented by contour plots and diagrams. The results show high performance for the copper foam-PCM unit compared with on its own PCM, for reducing the melting time by almost 85%. By changing the location of constant temperature heater from the bottom to the side and top surface, the melting time decreases by 70.5% and 4.7%, respectively. By using a multiple-segment porous system, the melting time reduces by 3.5% compared with the case of uniform porosity. Furthermore, the more accurate non-equilibrium numerical model shows a 7.4% difference in the melting time compared with the equilibrium model. This study optimises the design to improve practical application performance and to reduce waste energy. •Studying numerically the performance of the melting process for a PCM.•Porous-PCM composite reduces the melting time by 85% compared with on its own PCM.•The location of the heater has a great influence on the melting time.•Multiple-segment porous system shows better performance than the uniform porosity.•Non-equilibrium numerical model is more accurate than the equilibrium model.